when it comes to Helper Squads, I use them at random except 4 when Im in serious mode > in 3 starring a mission I haven't done yet so I pick a Helper Squad carefully based on speed and power.

Makes sense, I was farming the daily manyu missions like crazy (two 6* gained in less than a week and both hit types, need manyus! :P) and noticed her name and checked my ally list. But yes, I have a sense of nostalgia with her but I may have to let her go. Gods know I have a long list of requests to choose from.